From $0.20/ft
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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : THRMPL18-5
SKU : THRMPL18-5-250-WT
| Wire Size (AWG/MCM) | 18 AWG |
| Conductor Material | Copper |
| Conductor Type | Solid |
| Strand Count | Solid |
| Outer Diameter (OD) (in/mm) | 0.177 in. |
| Jacket Type | PVC |
| Conductor Count | 5 |
| Shield | Unshielded |
| Insulation Type | PVC |
| UL Listing Numbers | UL 13, UL 444 |
| Plenum Rating | true |
| Voltage Rating | 150V |
| Submersible | No |
| Flexibility Rating | Very Good |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 60°C |
| Standards | UL 13, CL2P UL 444, CM NEC Article 725, 800 Sunlight Resistant |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Residential and Commercial HVAC Systems, Boilers and Furnaces, Air Conditioning Units, Heat Pumps, Zoning Systems, General Purpose Control. |
| Weight per Foot | 0.035 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
Parent SKU : THRMPL18-5
SKU : THRMPL18-5-250-WT
Parent SKU : THRMPL18-5
SKU : THRMPL18-5-250-WT
| Wire Size (AWG/MCM) | 18 AWG |
| Conductor Material | Copper |
| Conductor Type | Solid |
| Strand Count | Solid |
| Outer Diameter (OD) (in/mm) | 0.177 in. |
| Jacket Type | PVC |
| Conductor Count | 5 |
| Shield | Unshielded |
| Insulation Type | PVC |
| UL Listing Numbers | UL 13, UL 444 |
| Plenum Rating | true |
| Voltage Rating | 150V |
| Submersible | No |
| Flexibility Rating | Very Good |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 60°C |
| Standards | UL 13, CL2P UL 444, CM NEC Article 725, 800 Sunlight Resistant |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Residential and Commercial HVAC Systems, Boilers and Furnaces, Air Conditioning Units, Heat Pumps, Zoning Systems, General Purpose Control. |
| Weight per Foot | 0.035 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
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Physical Specifications
Technical Specifications
Usage & Installation:
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18-5C Plenum Thermostat Wire is a specialized low-voltage cable designed for power-limited circuits in heating, ventilation, and air conditioning (HVAC) systems. The '18-5C' indicates it has 18 American Wire Gauge (AWG) conductors and 5 individual conductors. Its plenum rating means it's safe for use in air-handling spaces.
A 'plenum' refers to a specific air-handling space in a building, often above suspended ceilings or below raised floors, where air circulates for HVAC systems. Plenum-rated wire, like this 18-5C cable, is crucial because it's designed with low-smoke, flame-retardant materials that limit the spread of fire and reduce toxic fumes in case of a fire, ensuring building safety and code compliance.
This wire is primarily used for power-limited circuits in applications such as thermostats, air conditioning units, heat pumps, bell and alarm systems, signal systems, doorbells, and remote control units. It is specifically designed for installation in plenums without the need for additional conduit.
While plenum cable is primarily mandated for commercial buildings with plenum airspaces, it can certainly be used in residential settings. If your home has plenum airspaces or you need to run cables through air ducts, plenum-rated wire is required. Otherwise, it offers enhanced safety even where not strictly mandated.
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